Table 1 Multivariable logistic regression assessing the relationship between sleep duration and suicide adjusting for race/ethnicity, sexual identity, age, sex, substance use variables, trauma, and bullying

Sleep duration (ref=8 h of sleep or more)

Less than 8 h of sleep

1.77 (1.34, 2.35)

1.92 (1.65, 2.23)

1.82 (1.53, 2.16)

2.16 (1.34, 3.47)

Race (ref = White)

All other races

1.99 (1.50, 2.63)

1.38 (1.17, 1.62)

1.42 (1.19, 1.68)

1.63 (0.89, 3.00)

Black or African American

1.41 (1.01, 1.95)

0.79 (0.64, 0.96)

0.88 (0.68, 1.13)

2.36 (1.21, 4.62)

Hispanic/Latino

1.55 (1.21, 1.97)

0.96 (0.84, 1.09)

1.06 (0.93, 1.20)

1.57 (0.97, 2.52)

Sexual identity (ref = heterosexual)

Bisexual

4.19 (3.26, 5.40)

4.29 (3.61, 5.08)

4.45 (3.67, 5.41)

3.01 (1.72, 5.26)

Gay or Lesbian

2.15 (1.13, 4.11)

3.60 (2.55, 5.08)

3.67 (2.57, 5.25)

2.87 (1.36, 6.04)

Not sure

1.43 (0.97, 2.11)

2.30 (1.79, 2.96)

2.57 (2.06, 3.21)

1.23 (0.60,2.50)

Age (ref=>= 16 years)

12–15 years

1.43 (1.21, 1.70)

1.07 (0.95, 1.21)

1.05 (0.93, 1.18)

1.41 (0.97, 2.06)

Sex (ref = male)

Female

1.22 (0.96,1.55)

1.49 (1.31, 1.71)

1.37 (1.22, 1.54)

1.37 (0.86, 2.18)

Alcohol use (ref = no drink in past 30 days)

Drink at least one day in the past 30 days

1.53 (1.23, 1.92

1.36 (1.19, 1.56)

1.46 (1.24,1.71)

1.92 (1.27, 2.88)

Marijuana use (ref = no marijuana uses over past 30 days)

Marijuana use at least once in the past 30 days

1.72 (1.36,2.18)

1.58 (1.35, 1.86)

1.51 (1.29, 1.77)

1.49 (0.94, 2.35)

Cocaine use (ref = no uses of any form of cocaine in life)

Used a form of cocaine at least once in life

1.60 (1.06, 2.44)

1.62 (1.26, 2.09)

1.27 (0.94, 1.73)

3.58 (2.16,5.91)

Trauma (ref = no)

Yes

5.35 (3.30, 8.67)

4.23 (2.70, 6.61)

3.68 (2.41, 5.62)

5.56 (3.14, 9.83)

Bullying (ref = no)

Yes

4.80 (3.66, 6.30)

4.13 (3.48, 4.90)

3.68 (3.07, 4.42)

4.73 (2.97, 7.53)